US842478A

US842478A - Method of manufacturing lasts.

Info

Publication number: US842478A
Application number: US27138705A
Authority: US
Inventors: Henry F Loewer
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-07-26
Filing date: 1905-07-26
Publication date: 1907-01-29
Anticipated expiration: 1924-01-29

Description

No. 842,478. PATENTED JAN; 29, 1907.

v H. F. LOEWBR.

METHOD OF MANUFACTURING LASTS.

APPLICATION FILED JULY 26 1905.

- FIGJ.

F. LOEWEROF RooHEsTER, NEW YORK.

METHOD o MANUFACTURING LASTS.

Specification of Letters Patent.

Itatented Jan. 29, 1907.

Application filed J uly 26, 1905. I Eerial No. 271,387.

To all whom it mayconc ern:

Be it known that I, HENRY F. LoEwER, a

citizen of the United States, and a resident of Rochester, in the county of Monroe and State centering the same.

the" toe of a last made according to thisof New York have invented certain new and useful Improvements in Methods of Mamifacti'n'ing Lasts, of which the following is a specification.

This invention relateslte the method of manufacturing lasts hereinafter .described and claimed.

, In the drawings, .Figure 1 is a plan view of parts of alast-lathe, illustrating the method of the present invention. Fig. 2 is a longitudinal section through the toe of the form used in said last-lathe, showing the means of Fig. 3 is an elevation of method, and Fig. 4 is a front view of the same. I p r In the usual last-lathe a form 1, made of wood or metal, is fastened between two

centers

2 and 3 and is revolved in any suitable manner, such as by the gear 4, driven by the pinion 5 on the shaft 6. The shaft 6 carries another pinion 7, which drives a gear 8, fastened to one of the centers 9 for the last block 10. The other centeiyll for said lastblock is held in the usual way by the frame center 3 engages the form so far away from,

the edge of the bottom of the last-form that the guide-roller may engage both sides of the angle forming the edge of the bottom, and the cutter produces the like form in the lastblock, showing the complete shape of the last at the toe, and the unneeessary'portions of the last as it comes from the last-machine may be trimmed off by unskilled labor rapidly and with certainty. The heel end of thelast-block and of the form are held in the usual manner. The form 1 at the toe has'a plate 14, Fig. 2, fitting upon the bottom of the last from the toe back toward thejball,

A guide-wheel 12 runs,

and in this plate is a perforation 15, having above it a hollow or socket 16 in the form itself. The center 3 projects into the hole 15 .and engages the rear edge of said perforation in any suitable manner, such as by the forked end 1'7. The perforation 15 is at a suitable distance back from the tip 18 and from the bottom edge 2Q of the toe of the form. The form is thus centered by the center 3, which is out of line with the ti therefore permits the gui e-wheel 12 to run over the edge 19 of the form completely around the toe. The effect of this in the last-block is that when the turning operation is complete the edge 20 of the bottom of the block is visible com letely around the toe, as shown in Figs.'3 an 4, and the block or projection 21 may be sawed off by a circular saw and then by rasps, files, or sandpaper-machine the bottom of the last may be smoothedin accordance with said edge 20.

Heretofore the projection or waste center. piece hasfprojected from the tip of the toe of the last, and it has required skilful labor to finish the toe of the last, and articularly to finish the toes of two lasts, ri ht and left, so that they shall be identical. y the present method of manufacture, however, the complete' form of the last is automatically produced in the lathe, and the trimming of the last to its final form is reduced to a simple operation, not requiring skilled labor.

What I claim is 4 1. The method of manufacturing lasts in a lastlathe, consisting in first, connecting the lathe center with the last-form at the toe at a trimming off all the material beneath and up to said bottom.

2. The method of manufactm'ing lasts a last-lathe, consisting in first, connecting the of the toe, andlathe center with the last-form at the toe at a rotation; second, centering the last-block; a rejection at the toe eecelitrie t6 the center third, putting so fax-toward the center of rota- I 0 rotation; and lastly, trimming off-all the tion twat the guide-roller of the last-lathe material beneath and up to said bottom edge. 10

may engage both sides of the'angle. forming: HENRY F. LOEWER. the edge of the bottom including the toe, Witnesses: v D. 'G NE whereby the cutter cuts around, and forms the Whole bottom edge of the last, and leaves l L; THON.